Hand lift for harrows



' May 'af-,192?.A

R. M..DE ROSA HAND uw FOR filmnews Filed Jne 28, 1926 INVENTOR B .MDeRQsa ATTORN EY i Patented May 3, 1927.

f .HAND hier ronlinnnows.

"Application nieuwe' v2e, 192e. semaine'. 119,004.' i

.Y 'lhisv invention relatestoimprovements in Fig. Qfis similarview"showingtheteeth .3 devices for raising' an'dlowering' the groundlowered.; 1 l' i i i engaging members of' harrowsgmy'4 principalReferringfnow more particularlytofthe'u f' v objectsbeing toprovideahandliftimech! charactersoreference 'ontheidrawingsrthe; 55v v 45 anism,preferablyin'theform'oanattachnumeral: denotes the fr'a'r'neoflithefjharrowV ment, to be appliedto the ordinary operat-A lhaving aplurality/'loflongitudinally?spaced:

* ing lever of the harrows,'by. means of lwhich transverse shaftsorysimilar* turnable "ele-1 y 4 said ilevenmay ,be more easily' operated"to ments on which 'are lixedthefsprin'g teeth-"8.. raiseand"lower'the"groundengaging me'm-v Projecting upwardly"fromthemembers-Q V 60 bers lthan is at present the' case; and 'iso arearms l .connected by f a common 'linl 5f' constructedthatit' islnot'necessary'to" stop rlhe rearmostarm 4 hasian upwardlyffexrtheprogresso'f heharro'wjin orderto move tending lever 6associatedtherewith,by` i saidmembers, and thesame `will beautem'eans'o'fwhich'saidlarmsmayibe'swungone f' matically held in eitherraised or lowered way o1- the other, andthe teeth consequently 65`positions withoutthe need of anyfpawlI and. raisedfrom.onloweredfintothefgroundf` ratchet'orsimilar holding mechanism. MylThe 1ratchet and quadrant] mechanism i handileverdevice is 'alsov'so constructedlasto usually` associated4 ith thefleverfto enable be'veryeasy to operate,r4 and there isj nothing the saine to bemaintained set,Ii dofnot need v ,toget out of orderor :failto function; l` I oruse'yaid hencehave omitted lshowing-'the 70 1 20 "While my deviceunctionsrwith a'single sameon the-drawing. 1futhewharrowwiswfa leverharrow., it isr especially valuable incontwo or three sectionimplement,there' arefza ..1 nectiohfwith 'two or three sectionha'rrowslikel number@oileversandarm and'linkf' conhaving a corresponding numberofjlevers, nections,y all said levers being ,disposed fin "t: i sincewithmy device*appli'edftheretoallithe paralleltransverse-alinements s u75 'leversare operated simultaneously. This is My'improvedhanjdileverfdeviceto be'ap-y obviously a greatfimprovementover""`v`rthe {plied/to such"standardfparts comprises-fa f `prc-s'entconstruction which` necessitates each longitudinal "arm 7pivotedoniabracket lor lever being operated individually, and withlugfSjwhich is mounted fat theifront offithe` lthe, employment ofconsiderable` physical frame 1w The opposite endolrsaidlarm'is 8Glior't. L Y Lpivotedfo'ntol 'another fand longerarnfr'i9;1i`11' t n i .l'I'ha've here'shownand described'rtheop'-termediate'the'ends'owthelatter;V )Thellower erating device as beingjapplied'vto Aa spring end of the armQ is'fpivotedfonto abracket L. itoothharrow, but it is obvious thatV said del() which-isclaniped'ontothe'lever'ginterfy vice-can be utilized in connectionfwith:the medi'atefiits endsv and'in-rontof thesaine 185 controllever ofa'lhar'row'having anyform -by suitable meansysueh 1 as -Uii-bolts lljlf:of Vground'engaging'members l two or morelever'sarefprovided*onithe-im-` y A lurtherobject "of the inventionisI to-fplement a transverse beamlQ/isrprovided in- [produc'ea'simple' andinexpensive device and connection' with the-'bracket -10-sofasjztofexfyet one which will beexceedinglyeiiective i ltend Iacross 'all thelevers vinifrontmf fthe 90 40 'for thejpurposefor which is designed. fsame and to beclamped thereto.v The other 'l 'Thesev objects Iaccomplish by means-"of `endofthe:arm 9has anangul'arfextension 13 4such`structure-and relative arrangementoi vprojecting atan acutelangleto'thelongitudifparts "as will fullyappear by a fperusalof nal plane ofsaidarm inwan upwardand-forthe following specification andA claims@t.ward direction'whenlsaidarin'is horizontalv95` j QiIn'the drawingssimilar` characterso'fi'el V"lydisposed. Apull rope 14 i or the *like iserence' yindicate corresponding-parts infthe applied to the'outervendioithis-extension. vseveral'views:' 'A tension spring 15extendsrlr'omthegpiv#` Fig. '1 is a side elevation ofangordinaryVotalconnectionofthearm-9 with'the bracket 'springtooth'harrowshowingmyfhand lever "lOto afeonnection withthelvarmfrxinterme- 100 devicefapplied thereto and with-the teethv indiate'itsjends; The-9 ls provided with theirraised positions. l ff-ajplurality of longitudinally spaced holes i j pivotal connectionofthe bolt 17 4with the,

lor pastv dead-center position with respect to 16, so that theconnecting bolt or pin 17 of .thearm 7 may be applied to any onel ofsaid holes andthus alter the operative length of the arms whenthelatter'are ina certain position, and consequentlyfthe depth to whichthe teeth may project maybe altered, as will be hereinafter seen. f

The arms v7 and 9-are soarranged relaltive to eachother that when theteeth are out of the ground, and the lever 6 and arms 4 are disposed ataforwardangle, the arm, 9 will also be disposed at a forwardjangle,

the extension 13:ata vrearward angle, and

the arm 9Y at an upward and rearwardl angle.y The' spring 15 is thenbelowA the arm 9 and is in tension. The springV there- `fore constantlyacts to `pull the lever 6 fur-A nther' forward but .cannot do so since-it also tendsto pullthelarm 7 downward and rear-V vvardly.yConsequently ,the spring pressure 'gis equalized andthe lever and arm`structures are.` maintained in kthe positions to which-they havebeenmoved by arearwa'rd pull on :the extension 13 by means of the When itisv desiredto lower the teeth the 4 rope 14 is pulled from'ahead.L Thiscauses llever 6` rearwardly "about" lits axis.

the arm. .9 to beswung about the pin as an axis,.since the rod 7 isrigid. ,The'upper i yportion .ofthea'rm 9L therefore movesI forward. and'downward and the lowerportion iswmoved rearwardly, turning on itsconnection with. the bracket 10-andk forcingrhe is causes arearward;1'otation ofthe shaft@ and consequently a rearward rotation ofthe teeth 3 Vtoctake place. .The ,pullbn the-.rope

,'14 is maintainedquntil theV arms l7l and V'9 move pastalong'itudinally alinedv position,

-thevilocationvof'thejpin 17 relative to the 1opposite y'pivoted-,endsof the 'arms 7 and 9 with the frame a-ndlever respectively. 'TheSpring-15 then being still in tension acts to increasev this pastdead-center position, las

Will 'be evident, preventing any tendency of they teeth tox'leavey theground. l

yFurther downward movement iof the arms isf limited `,by thecforwarfden'd of the arm Zhengaging the yforward .shaft 2 or the framel.,`

The .rearward angular setting of thelever 6 and-associated parts andconsequently-the depth to which the teeth will enter the y ground iscontrolled by' altering the point of'conne'ction of the bolt. 17 withrespectto `the length of 'theA arm ,9, since, as will be evident, .whenthe arms are in the p last :named position, theoperativelengthpof saidarms between their opposed pivots. will k-b'e shortened'xlor lengthenedby c liang-ingthe bolt 17 from yonefto; another 1 of .the 'llongitudinally spaced holes16.

Vhile I have specifically .described and la device 'aslsubstantiallyfulfills the objects of the invention as set forth herein.

kWhile this specification sets forth in de-i tail the presentl andpreferred construction of the device`,"still 'in practice suchldeviations from, such detail may beresorted to` as do not, formfj adeparture fromv vthe `spirit of the invention, 'as vdefined by ytheappended claims. l

Having thus described my invention whatl and desire to'se I .claim asnew and useful cure by Letters Patentis:

\1. AV hand-lift structure for a harrow,l

said harrow including ay frame, ground engaging members turnably mountedthereon, a vlongitudinally movable lever pivoted on the frame` andmeansoperatively connecting the lever( and membersl to causey the latterto be turned with 'they movement of the lever;

kso

comprisingv anfarm,pivotallyfconnected to .c

the lever andvextending Iahead ofthe same, anotherarm pivotedatone endonto said first named army and at its other 'endjont'o the frame at theforward end lof the same, an operating member attached to the outer endyof the first named arm, said arms when I the: teethA are out of,- theground projectin upwardly at an angle to each' other vand whenthe teethare in the groundr moving down past dead center with respect to the y ipivotal connections at theends of the arms, "y

and springmeans applied to the arms to maintain the same ineither'of-thek above named positions. ,l l

2. Av hand-lift structure forv a harrow,

said harrowvr including a frame, ground engaging' members turnablymounted thereon, a longitudinally movable lever pivoted 4on the frameand means operatively connecting the ylever and vmembersfto causethelatter to beturned with the movementof the lever;

comprising an arm pivotally connected to the lever and extendingaheadofthe same, another arm'piv-oted at onezend onto said first named armand at its other end` onto o y theframe at the forward end of the same,

an operating memberattached to the outer end of the yfirst named arm,said arms vwhen the teeth yare out of ythe ground'projecting V.upwardlyat an angle to each other and` when the teeth are in the ground movingdown past/dead center with respect `to .the pivotalconnections at theends of the arms,

and a compression spring connected yto the vlirst named'arm belowthefconnection of the Y rsecond named arm therewith yandy to the secondlnamed arm -intermediate its ends.

3. A hand-lift vstructure for a harrow,

sai-d harrow inoludinga frame, ground engaging members turnably mountedthereon, a longitudinally movable lever pivoted on the frame and meansoperatively connecting the lever and members to cause the latter lto beturned with the movement of the lever 5 comprising an arm pivotallyconnected to the lever and extending ahead of the same,

another arm pivoted at one end onto said `first named arm adjacent`projecting ahead of said first namedv arm and at its other end onto 10i' the frame atthe forward end of the Same, and a further arm rigidlyconnected to the upward angle therewith.

RONALD' M. De ROSA;

its outer end *andy` '4 armat an acute l y i 15 In testimony whereofaffix my signature:V v n

